Ventilator for cold storage chambers



March 4, 1952 P. POULIOT 2,588,239

VENTILATOR FOR COLD STORAGE CHAMBERS Filed July 12, 1948 2 SHEETS-SHEET 1 Fig.5.

Pierre Poul/0f INVENTOR.

BY Mafia March 4, 1952 P. POULIOT VENTILATOR FOR COLD STORAGE CHAMBERS 2 SHEETS-SHEET 2 Filed July 12, 1948 ENE:

Pierre Poul/or IN VENTOR Patented Mar. 4, 1952 VENTILATOR FOR COLD STORAGE CHAMBERS Pierre Pouliot, Jacksonville, Fla. Application July 12, 1948, Serial No. 38,246

3 Claims.

'the cold storage rooms.

It is, therefore, an important feature of the instant invention to provide ventilating means 'for the upper strata of the cold storage rooms,

whereby comparatively warm air in the strata is automatically discharged from the room and the possibility of vapor condensation is substantially minimized, if not completely eliminated.

Another feature of the invention resides in its automatic actuation, the ventilating operation being eflected each time the door of the room is opened and closed.

An important advantage of the invention resides in its ability to retain cold air within the storage room, this being possible because the ventilator is not in operation unless the door of the room is opened and closed.

An additional advantage of the invention lies in its simplicity of construction and in its adaptability to installation in cold storage chambers of various sizes and types.

With the above more important objects and features in view and such other objects and features as may become apparent as this specification proceeds, the invention consists essentially of the arrangement and construction of parts as illustrated in the accompanying drawings, in which:

Figure 1 is a perspective view of the invention; Figure z is a vertical cross-sectional view thereof I Figure 3 is a perspective view of one of th louvers used in the invention;

Figure 4 is a cross-sectional view, taken sub substantially in the plane of the line 4-4 in Figure 1;

Figure 5 is a fragmentary cross-sectional view, taken substantially in the plane of the line 5-5 in Figure 2; and

Figure 6 is a fragmentary cross-sectional diagram, showing the invention in association with a cold storage chamber. a

Like characters of reference are employed to designate like parts in the specification and throughout the several views.

Referring now to the accompanying drawings in detail, the invention consists of a ventilator designated generally by the reference character 10, the same being primarily intended for use in association with cold storage chambers or rooms l2, such as are commonly employed by butchers, and the like.

These cold storage rooms or chambers usually assume the form of suitable enclosures provided with outwardly swingable doors I 4 whereby access to the interior of the chambers may be had, as is indicated in Figure 6.

The ventilator i0 is provided preferably on the ceiling l6 of the chamber l2, to which end the ceiling is formed with a rectangular opening [8, in which the ventilator may be conveniently mounted.

The ventilator ll] itself, consists of a multisided, dome-shaped frame 20, including a perimetric base 22, which is secured to the inner surface of the ceiling It in register with the opening l8, while a set of upright supports 24, configurated substantially as shown, are secured to the base 22 and extend upwardly through the opening l8, as will be clearly apparent.

The supports 24 carry at their upper ends a top plate 26, the configuration of which will be hereinafter more fully described, and it is 'to be noted that the supports 24 are of an L- shaped cross-sectional configuration, being. upwardly tapered and being provided at the longitudinal edges thereof with inturned fianges 28, as is best shown in Figures 4 and 5.

A set of louvers 30 is mounted at each side of the frame 20, these louvers in each set being superimposed and having longitudinal edge portions arcuated so as to provide tubular bearings 32 to accommodate shafts or rods 34, whereby the louvers are pivotally mounted between the supports 24 of the frame 20, as will be clearly apparent. The lower edge portions of the louvers 30 are inwardlyangulatedas at 3-6, the inwardly angulated portion of each louver in each set overlapping the tubular portion 32 of the next adjacent louver, substantially as shown in Figure 2. That is to say, this overlapping is present when the louvers are closed, but it is to be noted that the louvers are swingable outwardly as indicated by the arrows 38 in Figure 2, on which occasion the louvers in each set swing independently of one another.

It should be also explained that the louvers in '40. sure that the 'air passing-outwardly through .the

3 each set constitute what may be referred to as a shutter, the louvers being normally held in their closed position by the force of gravity.

However, when the invention is placed in use, closing of the door M will result in an increase in air pressure in the chamber l'2, whereby the louvers 3901? the ventilator, responding to an air pressure greater than that of the atmosphere, will be causedto swing outwardlyas indicated by the arrows 38, thus facilitating a discharge of comparatively warm air from the upper strata of the chamber 12. In this manner, condensation of vapor on the inner surface of the ceiling 16 will be substantially minimized, if not altogether prevented.

Needless to say, the louvers 30 will automatically return by gravity to their closed position, as soon as the air pressure within the chamber l2 becomes equalized with that of the atmosphere.

It is to be particularly noted that inasmuch as strata of the chamber will nothave an opportunity to escape.

'The aforementioned top plate 26 of'the ventilator assumes the;.forrn=of aninverted,multisided pyramidal deflector, having under surfaces which extend inwardly-and downwardly from the uppermost louver in each set, as indicated at (See Figure 2.) ".These inclined surfacesasventilator isdistributed equally through the various louvers, as will .be clearly understood.

Marginal edge'portions of the plate 26 are angulated downwardly and inwardly to affordstrips 26' of an L-shaped cross-section, thedownturned portions .of these'strips overlying the outer-faces of the posts 24 while the inturned portions of the strips extend inwardly to contact'the uppermost louvers in the several sets.

It is believed that the advantages 'and, use of the invention will be clearly apparent fromthe foregoing disclosure and accordingly, further description thereof at this pointis deemed unneccessary.

While'in theforegoing there has been shown and described the preferred embodiment of this invention, it is to be *understood that minor changes in the details of construction and arrangement of parts may be resorted to without departing from the spirit and scope of: the inventionas claimed.

Having-described the invention, whatis claimed as new is:

1. A ventilator-comprising a multie-sided base having a central air receiving aperture therein, postsattached to and rising from 'the corners of said base, each of said posts having a pair of inwardly extending vertically inclined flanges, "each of said posts having one-of its flanges in registry with one flangeof an adjacent post, a set'of vertically spaced horizontal pivot-shafts associated with each pair of adjacent posts and terminally ing against the outer face of the lower closure member when said closure members are in their closedposition, a cover plate supported upon the upperends of said posts provided with downwardly and inwardly angulated marginal edge portions affording elongated strips having an L- shaped cross-section, the inwardly angulated portions of said strips extending inwardly of said ventilator betweensaid flanges on adjacent posts and contacting the sleeve on the uppervclosure member of each group of closure, members.

2. A ventilator comprising a base having 1a centralair receiving aperture therein, a plurality of posts each having an L-shaped cross-section attached to said base and extendin 1 wardly therefrom, each of said posts havingone leg thereof disposed coplanar, with the registeringleg of the sidewise adjacent post, each of said posts having inwardly extending, flanges on. the vertically extending edges thereof, a set of; horizontally disposed louvers vertically pivotally mounted on the registering flanges of adjacent posts for movement therebetween, a-cover plate mounted on the upper ends of said postspand provided with downwardly and'inwardlyangulated marginal edge portions affording-strips having an Lshaped cross-section, the inwardly. 1an

gulated portions of said strips extending inwardly of said ventilator between the flanges ongadjacent posts and contacting the uppermostlouver of each of said sets of louvers.

3. The combination of claim 2 wherein the downwardly extending portions of said 1 strips overlie the outer face of the registeringjlegs of adjacent posts adjacent the upper ends ;of.,the

posts.

PIERRE .POULIOT.

REFERENCES CITED The following references are of record inth file of this patent:

UNITED STATES PATENTS Number Name Date 501,253 Netzer July 11,1893 I 538,976 McGure et al. May '7, 1895 715,169 Stanley Dec. '2, 1902 1,254,517 Lumm Jan. 22, 1918 1,601,100 Baker et a1 Sept.' ;2 8, l926 1,798,041 Sisung Mar.-2{l, 1931 1,996,340 -Mader Apr.. 2, 1935 2,184,110 Anderson Dec. 19,1939 

